Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
16008excellentexcellent11excellent
15009excellentexcellent11excellent
14005excellentexcellent11excellent
13006excellentexcellent11excellent
12004excellentexcellent11excellent
11004excellentexcellent11excellent
10005excellentexcellent11excellent
09009excellentexcellent11excellent
080023goodexcellent21excellent
070021goodexcellent11excellent
060018excellentexcellent11excellent
05008excellentexcellent11excellent
04005excellentexcellent11excellent
03005excellentexcellent11excellent
020066lightly pollutedexcellent21excellent
010080lightly pollutedexcellent21excellent
00009excellentexcellent21excellent
230049goodexcellent21excellent
220038goodexcellent41excellent
210029goodexcellent51excellent
200029goodexcellent51excellent
190038goodexcellent71excellent
180034goodexcellent51excellent
170031goodexcellent41excellent